Word: cedarholm
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...assisted by John Cedarholm of International Business Machines, Dr. Townes set up his ether-hunting apparatus in IBM's Watson Laboratory at Columbia. Two masers were arranged so that they shot their microwaves in opposite directions. As the masers (and the lab) swung with the turning earth to align the waves first with the direction of the earth's motion around the sun and then against it, any ether wind should have shown as an easily detected difference of frequency. But the recording pen never wavered...
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